When you wash your hands in sink, decrease the flow … Start by opening just the cold water. When you are returned to you wash your hands, then open the hot water.
When you take your shower, turn off the water with a switch while you soap your body and hair …
Now, most laundry soaps are very effective in cold water. Then wash your clothes in cold water!
Also, if you’re the type to rinse your glass plates and screws before putting them in the dishwasher, do it with cold water.
Heating hot water is the greatest expenditure of energy in a house. All means are good to try to reduce consumption and save on the one hand, but also save energy for our beautiful planet.